package com.zzy.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zzy.utils.utils.PageUtils;
import com.zzy.utils.utils.Query;
import com.zzy.product.mapper.ProductAttrValueMapper;
import com.zzy.product.entity.ProductAttrValueEntity;
import com.zzy.product.service.ProductAttrValueService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("productAttrValueService")
public class ProductAttrValueServiceImpl extends ServiceImpl<ProductAttrValueMapper, ProductAttrValueEntity> implements ProductAttrValueService {

	@Autowired
	private ProductAttrValueMapper productAttrValueMapper;
	
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<ProductAttrValueEntity> page = this.page(
                new Query<ProductAttrValueEntity>().getPage(params),
                new QueryWrapper<ProductAttrValueEntity>()
        );

        return new PageUtils(page);
    }
	
	@Override
	public void saveProductAttr(List<ProductAttrValueEntity> collect) {
		this.saveBatch(collect);
	}
	
	@Override
	public List<ProductAttrValueEntity> baseAttrListForSpu(Long spuId) {
		List<ProductAttrValueEntity> entities = productAttrValueMapper.selectList(new QueryWrapper<ProductAttrValueEntity>()
				.eq("spu_id", spuId));
		return entities;
	}
	
	@Transactional
	@Override
	public void updateSpuAttr(Long spuId, List<ProductAttrValueEntity> entities) {
		/*1、删除这个spuId之前对应的所有属性*/
		productAttrValueMapper.delete(new QueryWrapper<ProductAttrValueEntity>()
				.eq("spu_id", spuId));
		
		List<ProductAttrValueEntity> collect = entities.stream().map(item -> {
			item.setSpuId(spuId);
			return item;
		}).collect(Collectors.toList());
		
		this.saveBatch(collect);
		
	}
	
}















